A Brockton man was arrested Thursday night for his eighth drunken-driving offense, according to the Avon Police Department. William Doten, 65, was arrested in Avon around 10 p.m. when police responded to a Chevrolet pickup truck stopped in the middle of the road on West Main Street, Police Chief Warren Phillips said. This appears to be the eighth operating under the influence charge on Doten’s record, and he already has a lifetime revocation on his license, Phillips said. Doten was arrested and charged with operating under the influence of alcohol, operating on a revoked license, and having alcohol in an open container in his vehicle, Phillips said.